I believe the elevator sounds may be for the sight impaired.
Here is something I learned on our last cruise (probably #16). We like to have a drink on our balcony, however I like to have some kind of munchie with my drink. Now I know, I can go to the Martini Bar and ask for snacks. They serve little carafes of bar mix (nuts, pretzels, etc). You don’t have to sit there and drink you can take it away.